There are physiological reasons (dietary factors such as eating less, etc.) and pathologic reasons (constipation, intestinal diseases, anorectal diseases, etc.) for less defecation. The details are as follows: 1. Physiological reasons: mainly eat less or eat too fine food, or intestinal absorption is good, the production of stool is less. Generally physiological causes mainly change the dietary structure such as increasing the amount of food, eating more green leafy vegetables and fruits, increasing crude fiber food, increasing the amount of exercise to improve the situation of defecation. 2. Pathological reasons: when there is constipation, intestinal diseases (enteritis, intestinal tumors, etc.), anorectal lesions (hemorrhoids, anal fissure, etc.), intestinal peristalsis decreases, intestinal patency decreases, defecation produces a sense of pain, etc., so that the food stays for a long time in the intestinal tract constipation occurs, resulting in a decrease in stools. The person who has fewer bowel movements is recommended to consult a doctor in a timely manner to clarify the cause of the disease, treat the cause, and actively diagnose and treat the disease under the guidance of the doctor, so as to avoid delaying the disease.